This section covers electronics projects based on NodeMCU ESP8266 board. The NodeMCU is basically an open source firmware, and also commonly used term for the popular ESP8266 Development Board, which is a low cost, development board designed for IoT applications.
Electrical appliances are all around us, starting from the indispensable charger of your smartphone to heavier appliances like room heaters, air conditioners, washing machines, and whatnot. Given the status quo of a looming global energy crisis, it is vital to have an understanding of the power consumed by these devices. While our monthly electricity bill gives us a…
People may access messages, alerts, health information, and other advanced information easily and quickly using smartwatches. While smartwatches are formally revolutionary as standalone devices, their capabilities essentially increase when used in conjunction with other devices that people carry, such as their smartphones or tablets. In this project, we are going to…
When we are talking about LoRa, it's been more than 10 years since its first official launch and since that day LoRa is getting increasingly popular day by day. With so many IoT devices available, this low-power long-range wireless communication could fit into a plethora of applications. It is expected that by 2025 we will have 29 Billion devices connected to the…
If you are an embedded engineer and working in the electronic industry, there may come a situation where you need to determine the position of a moving object or you need to determine the altitude and velocity of a certain location. In this type of situation, a GPS module can come in very handy, so in this article, we decided to interface the NEO-6M GPS GSM module…
The oscilloscope is a must-have test instrument for any electronics engineer. It is used to visualize and observe various signals, usually as a two-dimensional plot with one or more signals plotted against time. They are used in designing and debugging electronic devices to view and compare waveforms, and determine voltage levels, frequency, noise, and other…
Timer interrupts are crucial in the use of ESP32 timer interrupt programming projects for accurate timing control. If you want something to occur on schedule, ESP32 timer interrupts give you the accuracy required. A timer interrupt is a dedicated interrupt that operates as a high-precision clock, counting and controlling time events with microsecond precision. ESP32'…
Let's say you are trying to build a remote IoT data monitoring system; the first problem you will face is how to get a proper internet connection for your device. Whether you want to get notified when someone enters your room or you want to water your plants from miles away, the internet is always a problem. In this type of situation, the SIM800L GSM/GPRS Module…
Interrupts are used to handle events that do not happen during the normal execution of a program, but when a specific trigger occurs. For example, if we write a program to blink an LED, the microcontroller will execute each command one by one. But if we want to monitor a switch to start or stop the blinking, it will only be possible after all other tasks before the…
As we know that visual aids like displays are inevitable in any Human Machine Interfacing. They are in every electronics nowadays, from simple toys to smartphones, computers, and even critical lifesaving medical devices. The displays will make it easier for the device to convey all of the information it has to provide to the user. If you look at displays, there are…
In industrial and domestic applications, attendance registering is important at each and every moment. Many industries face a lot of problems due to the lack of a proper attendance monitoring system. To overcome this, we must need a tamper-proof, unattended, and fast attendance registering system, and the best way for it is to use a biometrics identification system…
As winter sets in, the air hanging over us thickens with smoke and gaseous emissions from burning fields, industrial factories, and vehicular traffic, blocking out the sun and making it hard to breathe. Experts say that the high levels of air pollution and COVID-19 pandemic can be a dangerous mix that can have serious consequences. The necessity for real-time monitoring of…
We are all aware of a basic voltmeter, ammeter, and wattmeters, the three basic things you need to measure values on any electronic projects or circuits. Measuring voltage and current with the help of a multimeter can be a good way to start, but one of the biggest problems I face while testing a circuit is, measuring power efficiency. So, today we…
